重金属含有物の重金属処理方法及び重金属処理剤

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专利权人:

发明人:

申请号：

JP20110181620

公开号：

JP5790307(B2)

申请日:

2011.08.23

申请国别(地区):

日本

年份:

2015

代理人:

摘要：

PROBLEM TO BE SOLVED: To solve such problems that a heavy metal treatment agent except lead elutes, or the use amount of the treatment agent increases in the heavy metal-insolubilizing treatment of heavy metal-containing materials, particularly in the presence of organic acids.

SOLUTION: The elution of not only a particularly harmful lead but also other heavy metals such as zinc can be suppressed low even in the coexistence with organic acids and the like by adding a small amount of secondary amine carbodithioate, alkali metal hydroxide and/or alkali earth metal hydroxide to the heavy metal-containing material, and controlling the P alkalinity of the material to be (200 g-CaCO3/kg-heavy metal-containing material) or more.

COPYRIGHT: (C)2013,JPO&INPIT

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